[WebPayments] Making all fields and buttons focusable

chrome/browser/ui/views/payments/payment_sheet_view_controller.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/payments/payment_sheet_view_controller.h"
 
 #include <algorithm>
 #include <memory>
 #include <string>
 #include <utility>
@@ skipping 319 matching lines @@
   // +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+
   std::unique_ptr<views::Button> CreateWithButton(
       std::unique_ptr<views::View> content_view,
       const base::string16& button_string,
       bool button_enabled) {
     std::unique_ptr<views::Button> button(
         views::MdTextButton::CreateSecondaryUiBlueButton(listener_,
                                                          button_string));
     button->set_tag(tag_);
     button->set_id(id_);
+    button->SetFocusBehavior(views::View::FocusBehavior::ALWAYS);
     button->SetEnabled(button_enabled);
     return CreatePaymentSheetRow(listener_, section_name_,
                                  std::move(content_view), nullptr,
                                  std::move(button), /*clickable=*/false,
                                  /*extra_trailing_inset=*/false);
   }
 
   views::ButtonListener* listener_;
   base::string16 section_name_;
   int tag_;
@@ skipping 577 matching lines @@
   data_source_label->SetDefaultStyle(default_style);
   data_source_label->AddStyleRange(
       gfx::Range(link_begin, link_begin + link_length),
       views::StyledLabel::RangeStyleInfo::CreateForLink());
   data_source_label->SizeToFit(0);
   content_view->AddChildView(data_source_label.release());
   return content_view;
 }
 
 }  // namespace payments